TOSS must disable the user list at logon for graphical user interfaces.
An XCCDF Rule
Description
Leaving the user list enabled is a security risk since it allows anyone with physical access to the system to enumerate known user accounts without authenticated access to the system.
- ID
- SV-252964r991589_rule
- Version
- TOSS-04-020250
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the operating system to disable the user list at logon for graphical user interfaces.
Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following command:
Note: The example below is using the database "local" for the system, so if the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.
$ sudo touch /etc/dconf/db/local.d/02-login-screen